不可返回点；无还点：一架飞机飞行中，飞机没有足够的油料返回出发点的那一点。
The point in the flight of an aircraft beyond which there is insufficient fuel for return to the starting point.
大气数据计算机是飞机飞行中重要的数据来源，是保证飞行安全和稳定的重要航空机载设备之一。
ADC supplies data source to airplane. It is one of the most important equipments on the aircraft.
右边的是菲茨休富尔顿这里的人小，谁是在1977年发射的航天飞机飞行中的747项目试点。
The man on the right here is Fitzhugh Fulton Jr. , who was the project pilot in the 747 for those shuttle launch flights in 1977.
它的真正目的是发射和找回飞行中的小型飞机。
Its real purpose is the launching and retrieval of small aeroplanes in flight.
尽管在飞机等干燥环境中，飞行的过程中很容易滋生传染病，但由于飞机上使用了空气过滤器，因此你在飞机上得病的风险实际上很低。
Although in-flight infections thrive in dry environments like airplanes, your risk of getting sick from an airplane is actually low because of the air filters used.
飞机上医疗紧急情况中的13%——每天大约有四例——严重到需要飞行员改变航线。
13% of in-flight medical emergencies—roughly four a day—are serious enough to require a pilot to change course.
在最近的一次长途飞行中，我用一副耳机听飞机上提供的音乐。
On a recent long-distance flight, I used a headset to listen to music available on the plane.
在飞行梯队中，私人飞机处于最底层。
Private aircraft occupy the lowest rung of the flight ladder.
有些技术手段还被用于在两极之间迂回地飞行的飞机上来测量大气中的含氧量。
Some of these techniques are being used on board a plane that is zigzagging from pole to pole.
在他的设想中，飞行车就像是一台豪华的飞机，遍体通红，配备八台电动马达。
He envisions it as a sleek, red plane with eight electric motors.
Schwartz说，在该四面楚歌计划中的“四星”自信已经被强化，因为该飞机今年的飞行试验计划已经大大提前。
The four-star's confidence in the embattled program has been boosted because the plane is considerably ahead of its flight test schedule for this year.
可能会将它挂在计算机飞行模拟器、而不是一架飞机上，但是，如果愿意的话，也可以将它放在飞机中。
It might be hooked up to a computer flight simulator rather than an airplane, but you could put it into an airplane if you wanted to.
与其前身相比，白骑士二号的翼展扩大了三倍，现在的翼展和波音757飞机相当，在整体以碳纤维之类合成材料制造的飞行器中是最大的。
It has a wingspan equivalent to that of a Boeing 757, is three times larger than its predecessor and is the largest aircraft made entirely from composite materials like carbon fibre.
雷达给直升机提供远程搜索、水面舰艇的成像和跟踪、潜艇检测，并使用敌我识别系统识别飞行中的其他飞机。
The radar provides the helicopter with long-range search, imaging and tracking of surface vessels, a periscope detection mode, and the IFF to identify other aircraft in flight.
当“亚特兰蒂斯号”七月中旬完成最后一次航天飞行后，整整30年的航天飞机项目将成为历史。
When Atlantis makes its own final voyage in mid-July, the whole 30-year programme of shuttle flights will come to an end.
瑞士制造的太阳能动力飞机今天将进入黑夜飞行，计划中的数小时飞行将是它的第一次完整意义上的夜航。
The Swiss-built Solar Impulse airplane is about to enter the darkness today, already several hours into what is slated to become its first all-night flight.
曾饱受事故之苦的飞机工业，不仅把清单用于确保飞行员安全起飞，还用于从事故中吸取教训。
The aircraft industry, once plagued by accidents, uses them particularly well—not only to make sure that pilots take off safely but also to learn from disasters.
我们租了一架二战时期的水上飞机（世界上还在使用的三架这类飞机中的一架），我们还必须从加拿大请来一名消防飞行员来驾驶它。
We hired a second world war Catalina seaplane, one of just three operating in the world, and had to bring in a fire-fighting pilot from Canada to fly it.
在飞行过程中，飞行员们不得不经常将燃料从一个容器移到另一个，以保证飞机的平衡。
During the flight, the pilots had to move fuel from container to container to keep the plane balanced.
例如，作为“英国宇航系统公司”计划之一的无人机联合控制系统将使得喷气式飞机的飞行员在飞行过程中同时指派无人机分队执行侦查或战斗任务。
Among BAE Systems’ plans, for example, is the co-operative control of drones, which would allow a pilot in a jet to fly with a squadron of the robot aircraft on surveillance or combat missions.
航天飞机中的宇航员们都是聪颖而有所建树的人，他们全心全意致力于人类的太空飞行和探索。
The astronauts aboard the shuttle were smart and accomplished people, and they were deeply committed to human space flight and exploration.
在波士顿的铁路系统中，其环境噪音水平与飞行中的飞机不相上下，虽然它们听起来不大一样。
On the subway system here in Boston, the ambient noise levels are very comparable to the level on an airplane, although it sounds very different.
并且高超音速飞机目前只演示过由其他飞行器携带小型无人机至高速，而且其他计划中的试验飞行器同样太小不能坐人。
Plus, hypersonic flight has so far only been demonstrated for small unpiloted craft carried to high speed by other vehicles - and other planned experimental craft are too small to carry a pilot.
冰岛的国土一直处于地质活跃中。从雷克雅未克乘飞机飞行一个小时，途中尽是冒着蒸汽的地热区、巨大的地壳裂缝以及岛国最著名的几座火山。
Iceland is geology in action. A one-hour flight from Reykjavik skims over steaming geothermal areas, the great crustal rift and some of the country's most famous volcanoes.
“观众们注意了，你们即将见识发现号最后一次飞行的威力。”航天飞机指挥官史蒂芬·林赛发射前几分钟在无线电中说道。
"For those watching, get ready to witness the power of Discovery as she lifts off one final time," shuttle commander Steve Lindsey radioed minutes before launch.
“观众们注意了，你们即将见识发现号最后一次飞行的威力。”航天飞机指挥官史蒂芬·林赛发射前几分钟在无线电中说道。
"For those watching, get ready to witness the power of Discovery as she lifts off one final time," shuttle commander Steve Lindsey radioed minutes before launch.
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